#!/usr/bin/python3

import math
print('Content-Type: text/html')
print('')
print('<!DOCTYPE html>')
print('<html>')
print('<head>')
print('<title>The Area of a Circle</title>')
print('</head>')
print('<body>')
print('<h2>Calculating the area of a circle:</h2>')
print('<table>')
print('<tr><th>Radius</th><th>Area</th></tr>')
for radius in range(1,11):
   area = math.pi * radius * radius
   print('<tr><td>', radius, '</td><td>', area, '</td></tr>')
print('</table>')
print('</body>')
print('</html>')
